* {
    margin: 0;
    padding: 0;
    transition: 0.3s;
}

html,
body {
    scroll-behavior: smooth;

}

ul {
    list-style: none;
}

body {
    background-color: #0d031e;
    width: 100%;
    font-family: '微软雅黑';
}

/* header头部 */
.header {
    width: 100%;
    font-weight: 600;
    font-size: 1.25vw;
    letter-spacing: .15vw;
}

#navbar {
    position: fixed;
    left: 0;
    top: 0;
    right: 0;
    width: 100%;
    z-index: 999;
}

.header .wrapper {
    display: flex;
}

.logo {
    width: 16.5vw;
    margin-right: 2vw;
}

.nav-wrapper {
    min-height: 0vw;
    padding: 1.6vw 0;
    position: relative;
}

.nav-wrapper .nav-container {
    align-items: center;
    max-width: 92vw;
    margin: 0 auto;
    flex-direction: row;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: #fff;
    position: relative;
}


.nav-wrapper .nav-container .nav-l {
    align-items: center;
    display: flex;
}

.nav-wrapper .nav-container .nav-r {
    display: flex;
    box-sizing: border-box;
}

.nav-wrapper .nav-container .nav-r img {
    width: 10%;
    margin-right: 1vw;
}

.b-l {
    width: 10vw;
    text-align: center;
    border-radius: 1.2vw;
    margin: auto;
    margin-right: 1.5vw;
    transition: width .25s;
}

.b-l:hover {
    background-color: #192248;
    padding: 1.3vw 0;
}

.nav-wrapper .nav-container button {
    background-color: #192248;
    color: #fff;
    font-size: 1.25vw;
    width: 100%;
    height: 4.8vw;
    border: 0;
    line-height: 1;
    border-radius: 5vw;
    font-weight: 600;
    margin-right: 2.2vw;
    letter-spacing: .125vw;
    text-transform: uppercase;
    cursor: pointer;
    box-sizing: content-box;
    display: inline-block;
}


.nav-wrapper .nav-container .nav-a {
    display: flex;
}

.nav-wrapper .nav-container .nav-a li {
    padding-right: 3vw;
    list-style: none;
}

.nav-wrapper li a {
    color: #fff;
    text-decoration: none;
}

.nav-wrapper li a:hover{
    color: #253a9c; 
}

/* main */
.box {
    width: 100%;
    max-width: 82vw;
    height: 220vw;
    display: flex;
    margin-bottom: 12vw;
    margin: 0 auto;
    margin-top: 12vw;
}

.selector .title-firstlevel{
    color: #fff;
    font-size: 9vw;
    font-weight: 600;
}

.selector .title-Secondlevel{
    margin-top: 3vw;
    margin-bottom: 5vw;
    color: #d4e3ff;
    font-size: 1.7vw;
    font-weight: 600;
}

.selector .AI-block{
    display: flex;
    justify-content: space-between;
}

.selector .AI-block img{
    height: 31.2vw;
    border-radius: 2vw;
}

.selector .AI-block .block{
    position: relative;
}

/* green */

.selector .AI-block .block .block-firstlevel {
    z-index: 10;
    color: #fff;
    font-size: 3.8vw;
    padding-left: 3vw;
    top: 7.5vw;
    font-weight: 600;
    position: absolute;
}

.selector .AI-block .block .block-secondlevel {
    z-index: 10;
    color: #fff;
    font-size: 1.5vw;
    padding-left: 3vw;
    top: 12.7vw;
    font-weight: 600;
    position: absolute;
}

.selector .AI-block .block .block-thirdlevel {
    z-index: 10;
    color: #d4e3ff;
    font-size: 1.3vw;
    padding-left: 2.2vw;
    top: 18vw;
    font-weight: 600;
    line-height: 2vw;
    position: absolute;
}

/* purple */

.selector .AI-block .block .block-firstlevel3 {
    z-index: 10;
    color: #fff;
    font-size: 3.8vw;
    padding-left: 2.2vw;
    top: 12.5vw;
    font-weight: 600;
    position: absolute;
}

.selector .AI-block .block .block-thirdlevel2 {
    z-index: 10;
    color: #d4e3ff;
    font-size: 1.3vw;
    padding-left: 2.2vw;
    top: 21vw;
    font-weight: 600;
    line-height: 2vw;
    position: absolute;
    
}

.selector .AI-block .block .block-secondlevel2 {
    z-index: 10;
    color: #fff;
    font-size: 1.5vw;
    padding-left: 2.2vw;
    top: 17.7vw;
    font-weight: 600;
    position: absolute;
}

.selector .AI-block .block .block-firstlevel2 {
    z-index: 10;
    color: #fff;
    font-size: 3.8vw;
    padding-left: 2.2vw;
    top: 7.5vw;
    font-weight: 600;
    position: absolute;
}

/* 虚拟现实 */
.selector .title-firstlevel2{
    color: #fff;
    font-size: 9vw;
    font-weight: 600;
    margin-top: 4.2vw;
    margin-bottom: 4vw;
    text-align: center;
}

.selector .virtual{
    display: flex;
    justify-content: space-between;
}

.virtual .virtual-firstlevel img{
    width: 25vw;
    height: 16vw;
    border-radius: 2vw;
    margin-bottom: 1.3vw;
}

.selector .virtual .virtual-firstlevel {
    color: #fff;
    font-size: 2.8vw;
    font-weight: 600;
    margin-bottom: .5vw;
}

.selector .virtual .virtual-secondlevel {
    color: #fff;
    font-size: 1.8vw;
    font-weight: 600;
    letter-spacing: .08vw;
    margin-bottom: 8vw;
}

/* h-ci */

.selector .h-ci{
    width: 100%;
    height: 34vw;
    background-color: #11163c;
    border-radius: 2vw;
    margin-bottom: .5vw;
    padding-top: 2.9vw;
    margin-bottom: 8vw;
}


.selector .h-ci .virtual-firstlevel2 {
    color: #fff;
    font-size: 5vw;
    font-weight: 600;
    margin-bottom: 4vw;
}

.selector .h-ci .virtual-firstlevel2 p,
.selector .h-ci .virtual-secondlevel2 p{
    padding-left: 3.5vw;
}

.selector .h-ci .virtual-secondlevel2 {
    z-index: 10;
    color: #d4e3ff;
    font-size: 1.4vw;
    font-weight: 600;
    line-height: 2.8vw;
}

/* foucs */
.selector .foucs{
    display: flex;
    justify-content: space-between;
}

.selector .foucs .foucs-firstlevel {
    color: #fff;
    font-size: 5.8vw;
    font-weight: 600;
    margin-bottom: 4vw;
}

.selector .foucs .foucs-firstlevel p{
    padding-left: 2vw;
}

.selector .foucs .foucs-secondlevel p{
    z-index: 10;
    color: #d4e3ff;
    font-size: 1.4vw;
    font-weight: 600;
    line-height: 2vw;
    margin-bottom: 2vw;
}